upson



(No Model.)

E.' L. uPsoN.

GATE VALVE.

(Application led Oct. 1, 1898.)

Patented Apr. I8, i899.

2 Sheeis-Shet l.

` No. 623,265. Patemed Apr; la, |899.

E. L. uPsoN.

GATE VALVE.

(Application filed Oct. 1, 1898.)

(No Model.) 2 Sheets-Sheet 2.

Fz'g.

III

Figi-3.

Witnesses.' s u, Q 172062Z 027: ff-MW, 5M

nica.4

aTnNT E DXVIN L. UPSON, OF HARTFORD, CONNECTICUT, ASSIGNO-R TO THE PRATTdt CADY COMPANY, OF SAME PLACE.

GATE-VALVE.

SPECIFICATION forming part of Letters Patent No. 623,265, dated April18, 1899.

Application lziled October 1, 1898. Serial No. 692,413. (No model.)

T0 @ZZ 20h/mt t ntctg/ concern,.-

Be it known that I, EDWIN L. UPSON, a citizen of the United States,residing at Hartford, in the county of Hartfordand State of Connecticut,have invented certain new and useful Improvements in Gate-Valves, ofwhich the following is a specification.

This invention relates to a straightway gatevalve in which the gate isformed of in dependent disks that when the valve is closed are forcedfrom each other against .the seats by wedges located on the sides of thegatechamber.

The object of the invention is the production of a valve of this naturewhich is very simple to manufacture, exceedingly cheap in construction,quite durable in use, efficient in service, and easily repairable whenneces-v sary.

The body of the valve that is illustrated in the accompanying drawingsas embodying the invention is cast to shape with recessed lugs on thesides of the gate-chamber. These lugs loosely retain tapering blocks orwedges that can be cast to shape and quickly located in place. The castdisks, which are loosely engaged by a cast opening and closingspindleyoke, are provided with inclined surfaces which so cooperate withthe tapering surfaces of the loose wedges held bythe lugs that the disksare forced apart and caused to very tightly t against the seats when thegate is closed. As the wedges are loosely retained in position and asthe disks are independent of each other and are loosely engaged by thespindle-yoke, such a self-adjustment occurs when the gate is closed thatalthough all of the parts may be cast toshape in a cheapmanner andassembled without machine finish or fitting there will be no leakagewhen used with iiuid under high pressures.

Figure l of the views shows a transverse section of the body, a sideelevation of the spindle-yoke, and the back of one of the disks inclosed position, one of the loose wedges being omitted. Fig. 2 shows alongitudinal section of the body, the disks, and the spindleyoke. Fig. 3shows a longitudinal section of the body and one of the disks. Fig. lshows a horizontal section of the body, disks, and spindle-yoke- Fig. 5is a View of the inside face of one of the wedges. Fig. 6 is an edgeview of the spindle-yoke, and Fig. 7 is a view of the edge of one of thegate-disks.-

The body l of the valve may be cast to shapeof iron, brass, or any othersuitable metal,with screw-threaded or flanged ends for the attachment ofthe pipes of the system in which it is employed and for the attachmentof the bonnet. In the iiuidway rings 2 are preferably screwed to formthe seats around the ports. These rings may be formed of brass or othersoft metal that is suitable for forming good seats. The only machiningthat is required in the body is that which is necessary for screwingthese seat-rings to place. Then the body is cast, lugs 3` with recessesback of them are formed on the side walls of the gate-chamber. Taperingblocks or wedges 4,that may be Vcast with ends shaped to loosely fitinto/the recesses, are supported by these lugs. The ends of the wedgesare preferably thinner than the bodies and so rest in the recesses thatthe wedges cannot fall inwardly. The smaller ends of the wed ges arepreferably provided with prongs 5, arranged to be bent into notches inthe outer lugs, and the larger ends of the wedges preferably have prongs6 that can be bent on each side of the inner lugs. IVhen the wedges arein position, these prongs are bent over, so as to retain the wedges fromsidewise displacement. The wedges have limited movements when in place,so that they may adjust themselves freely, the prongs only restrainingthem from displacement.

The disks 7, which form the gate, are substantially circular pieces ofcast-iron or other suitable metal. In the form shown the seating-facesare formed of soft metal cast upon the outer faces of thedisks and heldin place by iiowing the soft metal into undercut grooves. On the innerfaces of the disks, so as to cooperate with the tapering surfaces of thewedges, are inclined surfaces 9. When the disks are moved inwardly,these inclines engage the wedges in such manner 4that the disks areforced from each other and the seating-faces caused to press tightlyagainst the faces of the seat-rings in the body.

In the center of the inner faces of the disks are recesses 10, andloosely extending into IOO ` in a foundry.

these are the hubs 11, that project from the yoke 12,which has a socketthat is threaded to receive the threaded handle-spindle. Lugs 13 may beprovided on the inner faces of the disks to limit the movements of thedisks edgewise with relation to each other and to the spindleyoke. Vhenthe spindle-yoke is moved inwardly by the turning of the handle-spindle,the disks are forced toward the inner end of the gate-chamber, but theyare free to move in all other directions, for the circular hubs of thespindle-yoke only loosely engage the walls of the recesses iu the innerfaces of the disks. As the disks move toward the inner end of thegate-chamber the engagement of the inclines on their inner faces withthe tapering edges of the wedges forces them from each other until theirseating-faces make close contact with the faces of the seat-rings.

Thewedges are loose, and should one of the disks be in advance of theother or should one side of one be lower than that side of the other orshould the wedges or the inclines be imperfectly formed or untrue thewedges will move and adjust themselves to all irregularities of thisnature, so that the disks will be surely forced tightly against theseat-rings. If one of the disks becomes more worn than the other or ifthe inclines on the disks or the edges of the loose wedges wearunevenly, the wedges will adjust themselves, so that both of the diskswill close tightly.

Vith this invention, although the disks are forced from each other bywedges on the side walls of the body, the seating of each disk dependsupon the other-that is, they mutually act to make tight joints and thewedges accommodate themselves and occupy intermediate positions.

The parts of this valve can all be formed There are no intricate shapes,no special fitting or machinery is required, and the parts can beassembled quickly without liability of improper arrangement. All of theparts are durable. Either of the disks can be removed and repaired orthe disks can be reversed if either should be subject to more wear thanthe other.

Thisvalve can be located and will successfully operate in any positionwithout danger that the parts will become d'isarranged.

I claim as my invention-' l. A valve having a body, a gate formed ofindependent sections movable together inwardly and outwardly in thegate-chamber in the body, lugs formed on opposite walls in thegate-chamber, and wedges loosely supported by the lugs on opposite sidesof the gate-chamber so as to, by contact with inclines on the edges ofthe backs of the gate-sections, force the gate-sections from each otheras the valve is being shut, substantially as specified.

2. A valve having a body, a gate formed of independent sections movabletogether inwardly and outwardly in the gatechamber in the body, a pairof lugs cast integral with opposite walls of the gate-chamber, andwedges loosely supported bythe lugs on opposite sides of thegate-chamber and provided with prongs that prevent the removal of thewedges from the lugs without interfering with their move ment, saidwedges being arranged so as to, by contact with inclineson the edges ofthe backs of the gate-sections, force the gate-sections from each otheras the valve is being shut, substantially as specified.

3. A valve having a body, a gate formed of independent sections movableinwardly and outwardly in the gate-chamber in the body, wedges looselysupported by the side walls of the gate chamber and arrangedY to adj ustthemselves and force the gate-sections from each other when the valve isbeing shut, and a spindle -yoke loosely connected with the-gate-sections, substantially as specified.

ranged to adjust themselves and force the gate-sections from each otherwhen the valve is bei'ng shut, and a spindle-yoke with hubs looselyprojecting into the recesses in the back faces of the disks, said yokebeing provided with a threaded socket for the reception of the threadedhandle-spindle, substantially as specified.

5. AY valve having a body, a gate formed of independent sections movableinwardly and outwardly in the gate-chamber in the body, said sectionshaving inclines on and circular recesses in their back faces and annularsea ting-rings on their front faces, wedges supported by lugs formed outhe side walls of the gate-chamber, said wedges being loosely retainedin position and arranged to adjust themselves and force thegate-sections from each other when the valve is being shut, and aspindle-yoke with circular hubs loosely projecting into the recesses inthe back faces of the disks, said yoke being provided with a threadedsocket for the reception of the threaded handle-spindle, substantiallyas specified.

EDVIN L. UPSON.

Vitnesscs:

HARRY R. XVILLIAMs, CHAs. D. KING.

,90 by the side walls of the gate-chamber and ar- IOC IIO

